The ratio of the number of lisa's pens to the number of adeline's pens was 2:3 at first.after father gave lisa another 16 pens,the ratio became 2:1
A.how many pens did adeline have?
B.if adeline gave away 6 pens,what would be the new ratio of the number of lisa's pens(after father gave her 16 pens)to the number of adeline's pens?
Adeline has X pens.
Lisa has 2x/3 pens.
A. (2x/3 + 16)/x = 2/1.
2x/3 + 16 = 2x
2x + 48 = 6x, X = 12.
B. 2/3 * 12 = 8 pens.
(8+16)/(12-6) = 24/6 = 4/1.